Sewerage system.



H. G. HUFF.

SEWERAGE SYSTEM.

APPLICATION FILED NOV.12, 1913.

Patented Apr. '7, 191% 2 SHEETS-SHEET 1.

Att'y H. G. HUFF.

SEWERAGE SYSTEM.

APPLICATION IILED NOV. 12, 1913.

1,092,649. Patented Apr. 7, 1914 2 SHEETS-SHEET 2.

&\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ HERMAN C. HUFF, 0F PITTSBURGH, PENNSYLVANIA.

SEWERAGE SYSTEM.

Specification of Letters Patent.

Patented Apr. 7, 1914.

Application filed November 12, 1913. Serial No. 800,584.

To all whom it may concern:

Be it known that I, HERMAN C. Horn, a citizen of the United States of America, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Sewerage Systems, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a sewerage system and has for its object to provide means in a manner as hereinafter set forth to pre- Vent water from a steam or river entering the mouth or discharge end of the sewer.

lVith the foregoing and other objects in View, the invention consists of a novel means hereinafter more specifically described and arranged at the mouth of the sewer to arrest back flow at the mouth end of the sewer, one embodiment of said means being illustrated in the drawings, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings, Figure 1 is an elevation showing the adaptation of a means in accordance with this invention, to prevent water from a stream or river entering the mouth of the sewer, Fig. 2 is a longitudinal section, Fig. 8 is a sectional plan of a part, and Fig. 1 is a detail in transverse section.

Referring to the drawings in detail, 5 denotes a sewer having the month end thereof reduced as at 6 to form a cylindrical contracted outlet 7, the latter projecting into an elbow 8, which terminates at one end into a cylindrical conduit 9. The elbow 8 at its other end merges into a hollow cylindrical member 10, into which opens a compressed air supply pipe 11.

The reference character 12 denotes a vertically disposed rectangular hollow structure built upon the river bed and having the end walls 13, 14, of greater height than the side walls and supported by the end wall 14, is an elbow 15 terminating in a vertically disposed hollow cylindrical member 16, into which opens a compressed air supply pipe 17. The conduit 9 extends into and is supported by the elbow 15.

The reference characters 18, 19, denote supports built upon the river bed and have secured to the top thereof a casing 20, in which is arranged an air compressor 21 operated in any suitable manner and the function of which is to supply air to the elbows 8 and 15 and by such an arrangement, the air under pressure being forced into the conduit 9 and being forced away from the mouth of the conduit 9, will pre vent the water from the river entering the mouth of the sewer.

Under normal conditions, the supply of air to the elbow 15 and the latter discharging around the outlet end of the conduit 9, will prevent back flow from the river into the conduit, but in case there should be a small back flow into the conduit 9, the air supplied to the conduit 9 through the elbow 8 will arrest said flow. The air is supplied into the conduit 9 around the outlet end 7 of the sewer 5. The elbow 15 is supported above the bottom of the rectangular structure and above the lower ends of the side walls of said structure, the said lower ends of said side walls being positioned above the lower ends of the end walls.

hat I claim is i 1. A sewer system comprising the combination with the outlet end of a. sewer, of an elbow into which extends said outlet end, a compressed air supply pipe communicating with said elbow, a conduit leading from said elbow, an elbow surrounding the outlet end of said conduit, and a compressed air supply pipe opening into the last mentioned elbow.

2. A sewer system comprising the combination with the outlet end of a sewer, of an elbow into which extends said outlet end, a compressed air supply pipe communicating with said elbow, a conduit leading from said elbow, an elbow surrounding the outlet end of said conduit, a compressed air supply pipe opening into the last mentioned elbow, and a rectangular structure supporting the last mentioned elbow above the bottom of said structure.

In testimony whereof I affix my signature in the presence of two witnesses.

HERMAN O. HUFF.

Witnesses:

MAX H. SRoLovrrz, N. L. BOGAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, 1). G. 

